Pith Number

pith:CQOUAJNZ

pith:2015:CQOUAJNZFBLU3NDFHJKUWMU5Z6

not attested not anchored not stored refs pending

Using Galaxy Pairs to Probe Star Formation During Major Halo Mergers

Andrew P. Hearin, Darren Croton, Douglas F. Watson, Guangtun Zhu, Henry C. Ferguson, Jennifer Lotz, Joseph Silk, Peter S. Behroozi, Rachel S. Somerville, Susan Kassin, Yu Lu

arxiv:1502.01342 v2 · 2015-02-04 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:57:41.662475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

141d4025b928574db4653a554b329dcf81008e1cc2383f60ce52403b2ff94cbc

Aliases

arxiv: 1502.01342 · arxiv_version: 1502.01342v2 · doi: 10.48550/arxiv.1502.01342 · pith_short_12: CQOUAJNZFBLU · pith_short_16: CQOUAJNZFBLU3NDF · pith_short_8: CQOUAJNZ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/CQOUAJNZFBLU3NDFHJKUWMU5Z6 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 141d4025b928574db4653a554b329dcf81008e1cc2383f60ce52403b2ff94cbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87717a860045627955f8a40f6108cc66adc1372476c67cb5a003a36fea314409",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-02-04T21:00:09Z",
    "title_canon_sha256": "2990077faa18299bb0c737ff95afe4345e5664b7c44716e70d6d7e80ee755395"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01342",
    "kind": "arxiv",
    "version": 2
  }
}